Baffle-wall brick.



No. 747,329. ,PATENTEDDEG.,15,1903. K. PARK. BAFFLB WALL BRICK.

APPLICATION FILED JULY 13, 1903.

N0 MODEL.

WITNESSES INVENTOR L\ UNITED STATES Patented December 15, 1903.

PATENT OFFICE.

KENNEDY PARK, OF .MANSFIELD, OHIO, ASSIGNOR TO THE AULTMAN 82; TAYLOR MACHINERY COMPANY, OF MANSFIELD, OHIO, A CORPORATION OF OHIO.

BAFFLE-WALL BRICK.

SPECIFICATION forming part of Letters Patent No. 747,329, dated December 15, 1903.

' Application filed July 13, 1903.

To all whom it may concern:

Be it known that 'I, KENNEDY PARK, of Mansfield, Richland county, Ohio, have invented a new and useful Baffie-Wall Brick,

of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a front elevation showing a portion of a baffle-wall composed of myimproved bricks. Fig. 2 is a broken side elevation of the same. Fig. 3 is a rear elevation; Fig. 4, a vertical section; and Fig. 5, a front elevation, showing one of the bricks on a larger scale. 7

My invention relates to the deflector or baffie-bricks employed in forming baffle-walls in water-tube boilers; and the object of the invention is to prevent the leakage of the gases through the baffle-wall, to reduce the number of joints, and to protect the brick by a metal casing during handling or transportation, while protecting the metal casing from the gaseswhen in place.

In the drawings, in which I show a preferred form of my brick, 2 is a baffle-brick having a plurality of holes 3 extending through it at a suitable angle to receive the watertubes 4. This brick is shown as of rectangular shape, with an integral'refractory flange or lip 5'extending around it on one face. This brick is molded into shape and is then baked or burned in the ordinary manner for making fire-brick. The brick thus formed is then placed in a suitable mold, and a steel or iron casing 6 is cast around it,covering its rear face and its side edges up to the flange 5. The outer periphery of the iron casing is preferably flush with the edge of the lip or extension 5. The iron or steel in cooling shrinks upon the brick, thus securing the two parts together and making the brick practically indestructible. To assist in this holding action I preferably form a dove tail connection between the two parts, the flange portion 7 of the iron tubing being made thicker toward its edge and the sides of the brick being beveled or inclined slightly. This method of forming and firing the brick and then casting a casing around it is of special advantage and is spe- Serial No. 165.394. No model.)

cifically claimed by me, although some of my claims are not limited to this feature.

When the bricks are assembled in place to form a baffle-wall with the water-tubes extending through them, the iron casing is protected from thehot gases by the fire-clay lip or flange, which covers the casing on the front face of the baffle, with which face the hot gases contact. It will be noted that the holes for the tubes are not metal-lined, but are merely formed through the material of the brick itself.

The advantages of my invention result from the use of the metalcasing, which prevents destruction of the brick and the arrangement of the brick to cover the'casing on the fire side and protect it from the heat. The burning of the brick before applying the easing prevents shrinking of the refractory material away from thecasing, and the casting operation firmly plants the two parts together.

Many variations may be made in the form and arrangement of the brick and its casing and the method of uniting them without departing from my invention. l

I claim- 1. A baffle-brick having a hole or recess to fit around a boiler-tube, and a metal casing cast in contact with the brick and having a hole or recess registering with that of the brick; substantially as described.

2. A baffle-brick having holes extending through itlto receive boiler-tubes, and a metal casing cast in contact with the brick and having dovetailed connection therewith, said casing having holes registering with those of the brick; substantially as described.

3. A baffle-brick having a metal casing, said brick having holes through it to receive boilertubes, the walls of which holes are formed by the fire-brick material itself; substantially as described.

4. A baffle-brick having holes extending through it to receive boiler-tubes, and a metal casing cast in cont-act with the. brick, the Walls of the holes through the brick being formed of fire-brick material itself; substantially as described.

5. A baffle-brick having a metal casing cast covering the edge of the metal casing on one ing holes registering with those of the brick;

side; substantially as described. substantially as described. IO

6. A baflie-brick having a surrounding lip In testimony whereof I have hereunto set or flange of refractory material at one edge my hand.

5 and provided with holes extending through KENNEDY PARK.

the brick, and a metal casing cast in contact Witnesses: with the brick, said casing covering the back J. ROWLAND BROWN, and sides up to the refractory lip, and hav- ISAAC HARTER, J r. 

